Spherical Lens Capabilities - CVI Melles Griot - #1

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CVI MELLES GRIOT CAPABILITIES BROCHURE 12 CVIMELLESGRIOT.COM Optics | SPHERICAL LENSES - UV TO NIR The general tolerance specifications above provide a guideline regarding manufacturing capabilities for uncoated optics ranging in size from 3-100 mm. The manufacturing limits are not absolute and may vary depending on material; tighter tolerances may be possible. Part specific tolerances may vary. All specifications do not need to be from single column. Surface Tolerances Precision Laser Grade Manufacturing Limit Surface quality (scratch-dig) 40-20 10-5 5-2 Polished surface roughness (Å, RMS) 10 5 < 1 Polished spherical irregularity (waves, P-V @ 633 nm) l/4 l/10 l/100 MRF® surface irregularity (waves, P-V @ 633 nm) l/20 l/40 l/80 Spherical radius (fringes) 5 3 0.5 Flat irregularity (waves, P-V @ 633 nm) l/4 l/20 l/100 Dimensional Tolerances Commercial Precision Manufacturing Limit Diameter (mm) +0.000/-0.250 +0.000/-0.025 +0.000/-0.005 Thickness (mm) ±0.250 ±0.050 ±0.005 Centration (edge thickness difference, mm) 0.05 0.01 0.005 Wedge <5 arc min 1 arc sec 0.5 arc sec Clear aperture (%) 85 90 100 • High laser damage threshold • Low scattering, low absorption • Single V, Dual V, and broadband AR coatings available • Conventional, diamond turned, and molded options available • Ask us about FabExpress™ Rapid Prototyping in less than two weeks • Diameters up to 600 mm • For materials see pgs 6-7